The math score for ten of Mrs. Moore's students are shown below. How many students made a score of more than 69 but less than 90
?
1 answer:
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Use inverse cosine here because you have the side adjacent to angle A and the hypotenuse. On your calculator, press the 2nd key then cosine to see this on your display 
then enter 8/17 to give you an angle measure of 62 degrees.
All triangles in this shape have same area as they have same base length and height length.
- area of triangle: 1/2 * base * height
Here the base is 4.2 cm and height is 2.5 cm for all the given triangles.
As a result, we can say that the area of A,
B,
C are equal.